Imagine a machine that can dig a tunnel wide enough to fit a five-story building through it. That's exactly what China has built! This machine, named Jianghai, is the country's largest tunnel-boring machine (TBM). It weighs a whopping 5, 000 tons and is 16. 64 meters in diameter. Why is this a big deal? Well, this machine isn't just for show. It's designed to take on some serious challenges, like tunneling under the Yangtze River. That's right, right under one of the world's longest rivers!

This isn't your average digging machine. It's smarter and stronger than previous models. It can dig through tough soil and even handle unexpected water bursts. Plus, it's fast! It can dig about 16 meters a day, which is like moving a whole football field in just a few days.

But why is China investing in such a powerful machine? Simple! They're building a major highway that will connect Nantong and Suzhou. This highway will include a tunnel that spans over 11 kilometers under the Yangtze River. Talk about an impressive feat!

Building this machine and tunnel isn't easy. The team behind it spent over two years designing and building it. They faced challenges like understanding past tunneling issues to make this machine even better. They also had to ensure the tunnel is precise, within just 1 centimeter, to keep river dams safe.

This isn't China's first big TBM. In 2022, they built a slightly smaller one for a project in Beijing. But Jianghai is their crown jewel. It shows just how far China has come in making big, smart machines.

NANTONG

Meet Jianghai: China's Giant Tunnel-Boring Machine